Which function in php can output the value of a variable or array?

php functions that can output variables or array values ​​are: 1. echo, used to output one or more strings to the standard output; 2. print, used to output one or more strings to the standard output Output; 3. var_dump, used to print variable-related information, including type and value, and output it.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

In PHP, you can use the following functions to output the value of a variable or array:

1. echo: used to output one or more strings to standard output ( usually a browser). Text, variables and simple expressions can be output.

   For example:

$name = "Alice";   echo "Hello, " . $name; // 输出：Hello, Alice

2. print: Similar to echo, used to output one or more strings to standard output. The difference is that print can only output a string and cannot output multiple variables or expressions.

   For example:

      $name = "Alice";
      print("Hello, " . $name); // 输出：Hello, Alice

3. var_dump: used to print variable-related information, including type and value, and output it. Particularly useful for debugging and viewing the structure of arrays.

   For example:

      $array = array('apple', 'banana', 'orange');
      var_dump($array);
      输出：
      array(3) {
        [0]=>
        string(5) "apple"
        [1]=>
        string(6) "banana"
        [2]=>
        string(6) "orange"
      }

The above functions can be used to output the value of a variable or array. The specific function to choose depends on the output requirements and format.

The above is the detailed content of Which function in php can output the value of a variable or array?. For more information, please follow other related articles on the PHP Chinese website!